WASHINGTON – Christopher Wray, a lawyer with a strong law enforcement background who represented New Jersey Gov. Chris Christie in the Bridgegate scandal, was announced Wednesday as President Donald Trump’s pick to head the FBI.

In an early morning two-sentence tweet, Trump said he intended to nominate Wray, a high-ranking official in George W. Bush’s Justice Department. That word came one day before the FBI director that Trump fired last month, James Comey, was to testify in public on Capitol Hill for the first time since that dismissal.

I will be nominating Christopher A. Wray, a man of impeccable credentials, to be the new Director of the FBI. Details to follow.

Trump called Wray “a man of impeccable credentials,” but offered no more information about the selection, except to end the tweet with “Details to follow.”

House Speaker Paul Ryan, Republican from Wisconsin, said Wray seemed like “the perfect kind of person” for the important job. Ryan said he favored a “career person” and that Wray “certainly seems to fit that bill.”

Wray rose to head the department’s criminal division in the Bush administration and oversaw investigations into corporate fraud, at a time when Comey was deputy attorney general. Wray took charge of a task force of prosecutors and FBI agents created to investigate the Enron scandal.

He also played an important role after Sept. 11, providing oversight as the FBI and Justice Department shifted their focus to counterterrorism and performing “superbly during the incredibly intense period,” according to the current attorney general, Jeff Sessions.

Sessions said in a statement that Wray “combines a brilliant legal mind, outstanding accomplishments, and a proven record of public service.”

Wray is a traditional choice for the job, given his background. Trump had considered current and former politicians, including former Sen. Joe Lieberman, Democrat Connecticut, and some FBI agents worried that that Trump would try to politicize the bureau.

Thomas O’Connor, president of the FBI Agents Association, said that group looked forward to meeting with Wray and learning about his views on bureau and the challenges agents face.

Reaction to Wray was slow on Capitol Hill as lawmakers weren’t given advance notice and few in Congress know him. Presidents traditionally give members of the same party a heads up about such an announcement, allowing lawmakers time to prepare positive statements about the nominee.

A top Republican on the Senate Judiciary Committee, Utah Sen. Orrin Hatch, said Wray had “impeccable credentials, vast experience, and strong support across the board.”

A GOP colleague was more cautious.

“With the many threats that the U.S. faces domestically and internationally, we need a strong FBI director,” said Oklahoma Sen. James Lankford, a member of the Senate Intelligence committee. “In the coming weeks, we will evaluate Christopher Wray’s qualifications to lead the FBI and his plans for our security and law enforcement.”

The timing of Trump’s announcement appeared to be an effort to redirect attention on the eve Comey’s testimony before the Senate intelligence committee. Comey, during his upcoming appearance before the Senate Intelligence committee, is expected to describe his encounters with Trump in the weeks before his May 9 firing. Comey could offer new details regarding discussions with Trump about the federal investigation into Russia’s election meddling and possible coordination with the Trump campaign.

The White House and its allies have been looking for ways to offset that potentially damaging testimony and have been working on strategies aimed at undermining Comey’s credibility.

Wray works in private practice for the King & Spalding law firm. He represented Republican Christie in the lane-closing investigation, in which two former Christie aides were convicted of plotting to close bridge lanes to punish a Democratic mayor who wouldn’t endorse Christie. During tense times, Christie said he would make one call: to Wray.

The two met and bonded when Christie was the top federal prosecutor in New Jersey in the Bush administration. Christie said the president made an “outstanding choice” for FBI director, calling Wray an independent, nonpolitical pick. Law enforcement ought to be “thrilled,” Christie said.

Christie, who has informally advised Trump, was not charged in the bridge case.

Christie’s office disclosed last year that Wray had the missing cellphone that was used by the governor and contained about a dozen text messages that Christie exchanged with a former staffer during a legislative hearing related to the bridge in 2013.

Former colleagues described Wray as serious and professional.

Alice Fisher, who followed Wray as head of the Justice Department’s criminal division and also interviewed for the FBI post, called Wray “an excellent lawyer who will provide even keeled leadership” and already has strong ties to the FBI.

Early in his career, Wray, a 1992 graduate from Yale Law School, was an assistant U.S. attorney in Georgia.